Drilling machine



May 22, 1923.

L. A. REVOR DRILLING MACHINE Filed Sent. 20. 1921 R n n mf m n0 4 w S v t v e mf 5 M May 22,1923. 7 1,456,406

L. A. REVOR DRILLING MACHINE Filed Sept; 20. 1921 5 Sheets-Sheet 3 May 22,1923. 1,456,406

L. A. REVOR I I DRILLING MACHINE Filed Sent. 20. 1921 5 Sheets- Sheet 5 May 2 2, 1923. L. A. REVOR DRILLINQ MACHINE Filed Sent. 20. 1921 5 Sheets-Sheet 4 May 22, 1923.

L. A. REVOR DRILLING MACHINE Filed Sept. 20. 1921 5 Sheets-Sheet 5 Patented May 22, 1923.

DRILLING MACHINE.

Application filed September 20, 1921. Serial No. 501,921.

To all whom it may concern Be it known that 1, Leo A. Rnvon, a citizen of the United States, residing at Lyon Mountain, in the county of Clinton and State of New York, have invented certain new and useful Improvements in a Drilling Machine; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertainsto, make and use the same.

The object of the invention is to provide a relatively simple and eflicient construction of rock drill for use in mining and like operations, and more especially to provide efficient means for supporting, guiding and advancing or forwardly feeding a bit actuating mechanism consisting essentially of a bit actuating hammer and means for pneumatically operating the same of the commercial or any well known type, to the end that the machine may be set up and retained in any desired position, angular or otherwise, to the plane of the horizon and may be advanced as the cutting operation progresses without requiring the manual control of the operater; and furthermore to provide in connection with a drill of this type means whereby the cuttings may be removed by washing. from the path and proximity of the bit and the flying of the dust incident to the operation of the bit may be prevented to minimize in that particular the inconvenience to which the operator and any by-standers are ordinarily subjected; and with these general objects in view the invention consists in a construct-ion, combination and relation of parts of which a preferred embodiment is illustrated in the accompanying drawing wherein:

Figure 1 is a general elevation of the machine set up in the operative position,

Figure 2 is a plan view of the same,

Figure 3 is a side view,

Figure 4 is a longitudinal sectional view showing the machine body in an advanced position,

Figure 5 is a front end view,

Figure 6 is a detail view partly in section of one of the supporting legs of the frame and the parts directly connected therewith,

Figure 7 is a transverse sectional View on the plane indicated by the line 7-7 of Figure 2 to show the ratchet mechanism and the connections between the braces and the front supporting head or clamp.

Figure 8 is a transverse section on the plane indicated by the line 8-8 of Figure 2 to show the means for controlling the rapidity of speed of the machine.

Figure 9 is a transverse section on the plane indicated by the line .99 of Figure 2 to show the rear carriage head,

Figure 10 is a detail view partly in section of the rear end of the machine to show the connection of the rear foot and the means for bracing the feed piston,

Figure 11 is a transverse sectional view on the plane indicated by the line 111l of Figure 2 to show the means for guiding the feed piston in the feed cylinder, and

Figure 12 is a detail view of the coupling plug and water circulating tube.

The invention has been illustrated in connection with a typical form of drill operating mechanism consisting essentially of the cylinder in which operates the hammer piston 21 of which the pole 22 extends through and is provided with cam grooves.

23 for actuating the ratchet mechanism 24 for imparting a step bystep rotary movement to the drill chuck 25 which carries the drill bit 26, a suitable bushing 27 being employed as usual in this connection and a casing 28 being arranged to enclose the chuck and having suitable connection with the cylinder; together with valve mechanism indicated at 29 for controlling the application of pneumatic pressure to the bit actuating or hammer piston and which is supplied by an air feeding pipe 30 having a throttle valve 31. Connected with the air feed pipe it is preferred to use a lubricating means 32 whereby the reciprocatory valve 33, the hammer piston and other parts may be properly supplied with lubricating material. As in the ordinary practice. the cylinder preferably carries the side rods 3 L serving to maintain the parts in their proper relative positions and fitted with cushion springs 35 for relieving the jar and strain in the operation of the mechanism.

In the illustrated embodiment of the invention the drill actuating means or engine as above described is supplemented by feed mechanism which in a simple form as shown contemplates a long tubular feed cylinder 36 for the reception of an elongated piston or piston rod 3? keyed to permit of relative longitudinal movement while preventing relative rotary or angular movement as by means of a key pin 37 secured against displacement by a nut 38 and having attached to its rear end a foot 39 adapted as a bearing element for contact with any suitable stationary object such as a wall, floor, block, frame work or the like to resist the blows of the hammer piston upon the drill bit and also enable the feed cylinder with the engine or drill actuating means to be advanced in relation thereto as the drilling operation or the penetration of the drill bit proceeds. In the construction illustrated the foot is of pronged construction ada ted to obtain a firm engagement with an object in contact with which it may be arranged, and the foot and piston so related are utilized as elements of a supporting frame having a front supporting head 40 with which the rear foot is connected by a brace rod 41 terminally secured by suitable bolts, and said supportin head carries legs 42 preferably adjustable to permit of varying the relative posiions thereof with reference to each other and to the head, for terminal contact with suitable adjacent supporting objects for holding the frame and hence the engine in' the proper position to enable the drill to be driven in the desired direction.

The supporting frame in addition to the feed piston which constitutes a guide for the feed cylinder is provided at its supporting or front head with guides consisting in the construction illustrated of loops or straps 44 in which are arran ed rooved who so 45, and for mounting the engine upon the frame thus provided, to permit of the advancement of the engine as the penetration of the bit proceeds, there is employed a carriage of which one element is represented by the feed cylinder and in connection with which are employed the front and rear carheads 45 and 46 connected by the nee rods 4? which operate in said guides on the front supporting head. Carriage heads are preferably constructed as shown in the form of clamps which respectively embrace the engine cylinder and the feed cyli er and mav consist as shown of oppo- Lely disposed substantially parallel bars and cut away at their inner sides to form seats for tie reception of the cylinders, connected at one end by links 50 and secured together at the opposite end by a bolt 51 having a suitable terminal nut 52, so that the separation of the parts, and particularly of the engine from the carriage and supporting frame may readily be etfected when required.

In order to provide for a free and universal adjustment of the front supporting legs the head of the supporting frame is provided with a T-shaped bracket 55 having a supplemental brace rod 56 extending rearwardly to a portion of the main longitudinal brace rod adjacent to the rear end thereof and provided with terminal trunnions 57 upon which are mounted longitudinally swinging bearing blocks 58 adapted to be secured in adjusted angular position by set screws 59, and these bearing blocks are in turn provided with trunnions 60 upon which the heads 61 of the supporting legs are mounted for transverse swinging movement and are secured in adjustedpositions by set bolts 61, said heads being split to form clamps. The legs are preferably of extensible construction and as shown may consist of telescoping members comprising the tube 62 and the core or rod 63 of which the latter is adapted tobe secured at the desired extension by means of a set screw 64. This arrangement of parts provides for disposing the supporting legs at the front end of the machine in any desired position with relation to each other and with relation to the machine so as to support the latter and if desired give it an inclination or tendency in the direction of the drilling operation to suit the conditions under which the machine is being operated.

The engine construction in addition to having the exhaust valve 65 is provided in connection with the pressure feed pipe with a by-pass or auxiliary feed tube 66 which communicateswith the upper end of the feed cylinder and is provided with a regulating valve 68 for the purpose of admitting pressure at any desired rate to the upper end of the feed cylinder to cause the advance of the engine and therefore the drill bit as the work of the latter proceeds to maintain the bit in operative relation with the work.

Also in communication with the upper end of the feed cylinder is a release valve 69 desi ned when opened to permit of the exhaust 0 air from the upper end of the feed cylinder so that the engine may recede to withdraw the bit from the hole which it has drilled to permit of changing the position of the machine or of applyingalonger bit or replacing a broken bit. If desired the withdrawal of the bit from the wall in which it has been operated may be effected by the opening of the release valve without stopping the engine or obviously the engine may be stopped by the closing of the throttle valve which also acts as a means as in the ordinary construction of controlling the rapidity of the stroke of the engine or hammer piston. Or the exhaust may be opened without disturbing the throttle valve tocheck the operation of the hammer piston.

Moreover in connection with the upper end of the feed cylinder is a water supply pipe 7 0 provided with a suitable controlling valve 71 and preferably having a flexible section 72, and a passage is provided whereby the water so introduced is communicated to and through a bore 74: in the drill bit so that it is fed to the drill at its operating end to remove chips and dust and prevent the flying of the latter to the inconvenience of the operator.

In the construction shown the coupling head 7 5 which forms the connection between the engine or motor cylinder 20 and the feed cylinder 36 is provided with a bore 76 to which is fitted a feed tube 77 extending to the bore of the bit to convey the water under pressure to the cutting end of the bit for washing purposes. Moreover, it will be obvious that as a means of minimizing the number of machines required in connection with various kinds of drilling operations, the structure disclosed herein may be used in a jack screw column and also in well drilling or any equivalent thereof.

An important function of the release valve 69 resides in the fact that it serves to control the pressure upon the drill bit and thus prevents the forcing of the drill bit against the work to such an extent as to stop the operation of the drill. Also, by the use of this valve the eflort necessarily extended by the driller or drill runner is materially lessened. Not only is this true in regular work, but especially in collaring a hole, and the extent of pressure required may be regulated to suit the convenience and the preference of the operator, by simply adjusting the valve to afford more or less relief.

Having thus described the invention, what I claim is 1. A drilling machine having a pressure operated drill mechanism, a tripod frame upon which the drill mechanism is mounted for movement in a path in alignment with that of the drill, one of the feet of the tripod having a thrust in alignment with the movement of the drill member, and means actuable by drill operating pressure for moving the drill mechanism away from said tripod foot.

2. A drilling machine having a pressure operated drill mechanism, a tripod frame upon which the drill mechanism is mounted for movement in a path in alignment with that of the drill, one of the feet of the tripod having a thrust in alignment with the movement of the drill. member, and means actuable by drill operating. pressure for moving the drill mechanism away from said tripod foot, the other feet of the frame being carried by extensible legs. 13.

3. A drilling machine having a pressure operated drill mechanism, a tripod frame upon which the drill mechanism is mounted. for movement in a path in alignment with that of the drill, one of the feet of the tripod having a thrust in alignment with the movement of the drill member, and

means actuable by drill operating pressure for moving the drill mechanism away. from said tripod foot, the other feet of the frame being carried by-extensible legs, mounted for universal movement on the frame.

4. A drilling machine having a pressure operated drill mechanism including a cylinder, hammer piston, valve mechanism and pressure feed, a supporting frame having a head carrying legs and provided with guides, a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel with the path of the drill mechanism and carried by andrespectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a by-pass connecting the pressure feed with the cylinder member.

5. A drilling machine having a pressure operated drill mechanismincluding a cylin; der, hammer piston, valve mechanism and pressure feed, a supporting frame having a head carrying legs and provided with guides, a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a by-pass connecting the pressure feed with the cylinder member, the head carrying legs being universally mounted thereon.

6. A drilling machine having a pressure operated drill mechanism including a cylinder, hammer piston, valve mechanism and pressure feed, a supporting frame havinga head carrying legs and provided with guides,

a carriage for the drill mechanism having cylinder and piston members and having a bypass connecting the pressure feed with the cylinder member, the head carried legs der and piston members and having abypass connecting the pressure feed with the cylinder member, the head of the supporting frame having a T-bracket of which the arms are provided with terminal trunnions, bearing blocks swiveled upon said trunnions for swinging movement longitudinally of the movement of the machine, and the legs bein swiveled upon trunnions carried by saic bearing blocks.

8. A drill machine having a pressure operated drill mechanism including a cylinder, hammer piston, valve mechanism and pressure feed, asupporting frame having a head carrying legs and provided with guides, a

carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a bypass connecting the pressure feed with the cylinder member. a head of the supporting frame having a T-bracket of which the arms are provided with terminal trunnions, hearing blocks swiveled upon said trunnions for swinging movement longitudinally of the movement of the machine, and the legs being swiveled upon trunnions carried by said bearing blocks. means being provided for securing said bearing blocks and legs in their adjusted relative position.

9. A drilling machine having a pressure operated drill mechanism including a cylinder, hammer piston, valve mechanism and pressure feed, asupporting frame having a head carrying legs and provided with guides, a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a bypass connecting the pressure means with the cylinder member, the guides consisting of looped members and enclosed grooved rollers for receiving the guide rods of the carriage.

10. A drilling machine having a pressure operated drill mechanism including a cylinder, hammer piston, valve mechanism and pressure feed, a supporting frame having a head carrying legs and provided with guides, a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel'with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a by-pass connecting the pressure feed with the cylinder member, the rear terminal of the piston feed member carrying a thrust foot.

11. A drilling machine having a pressure operated drill mechanism'including a cylinder, hammer piston, valve mechanism and pressure feed, a supporting frame having a head carrying legs and provided with guides, a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having: a by-pass connecting the pressure feed with the cylinder member, the rear end of the pis ton feed member being connected with the head of the supporting frame by a longitudinal brace.

12. A drilling machine having a pressure operated drillmechanism including a cylinder, hammer piston, valve mechanism and pressure feed, a supporting frame having a head carrying legs and provided with guides, a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder and piston feed members disposed parallel with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a bypass connecting the pressure feed with the cylinder member, the feed cylinder member being arranged in alignment with the drill mechanism cylinder.

13. A drill machine having a pressure operated drill mechanism including a cylinder, hammer piston, valve mechanism and pressure feed, a supporting frame having a head carrying legs and provided with guides a carriage for the drill mechanism having guide rods operating in said guides of the supporting frame, telescoping cylinder'and piston feed members disposed parallel with the path of the drill mechanism and carried by and respectively forming parts of the carriage and the supporting frame, and carriage feed mechanism including said cylinder and piston members and having a bypass connecting the pressure feed with the cylinder member, a release valve being arranged in communication with the feed cylinder memher.

In testimony whereof I afiix my signature, in presence of twowitnesses. I

LEO A. REVOR.

lVitnesses:

C. J. LANIGAN, GEORGE ROBINSON. 

